Bad news for a bad nanny

• Cuckold's purchase, perhaps
• Cloak-and-dagger device
• Video surveillance unit, for short
• Surveillance device
• Cloak-and-dagger gadget
• Surveillance aid
• Wireless apparatus
• Miniature surveillance gadget

Wiktionary Word definitions in Wiktionary
n. A camera, especially a webcam, used for covert surveillance.